Collect. Czech. Chem. Commun.
1983, 48, 928-936
https://doi.org/10.1135/cccc19830928
The synthesis and the mass spectra of 28,29,30-trinoroleanane derivatives with a double bond in the ring E or D
Jiří Protiva, Václav Křeček, Josefa Křečková, Eva Klinotová and Alois Vystrčil
Department of Organic Chemistry, Charles University, 128 40 Prague 2
Abstract
A series of 28,29,30-trinor-18α-oleanane derivatives with two double bonds - 17(22) and 20(29) - was prepared. The position of the 17(22) double bond was demonstrated by partial hydrogenation of the diene on tris-triphenylphosphinerhodium chloride and by comparison of the product with an authentic sample. The mass spectra of the series of dienes I-IV and monoenes VI-X are discussed.
